From: Simon Ruderich <simon@ruderich.org>
Date: Tue, 7 Jun 2011 16:08:29 +0000 (+0200)
Subject: bin/battery.pl: Add checks and correct exit code.
X-Git-Url: https://ruderich.org/simon/gitweb/?a=commitdiff_plain;h=2c0bac75e124fe1497b5718abf5b2a13a5de0a00;p=config%2Fdotfiles.git

bin/battery.pl: Add checks and correct exit code.
---

diff --git a/bin/battery.pl b/bin/battery.pl
index 6a9ce2c..407e0bc 100755
--- a/bin/battery.pl
+++ b/bin/battery.pl
@@ -9,7 +9,7 @@ my $path = '/sys/class/power_supply/BAT0/uevent';
 
 # No battery available.
 if (! -e $path) {
-    exit;
+    exit 1;
 }
 
 my $screen_mode = (defined $ARGV[0] and $ARGV[0] eq '-s');
@@ -17,7 +17,7 @@ my $tmux_mode   = (defined $ARGV[0] and $ARGV[0] eq '-t');
 
 my %battery;
 
-open my $file, '<', $path;
+open my $file, '<', $path or die $!;
 while (<$file>) {
     /^POWER_SUPPLY_([A-Z_]+)=(.+)$/;
     $battery{$1} = $2;